Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
050067moderately pollutedgood141excellent
040065moderately pollutedgood131excellent
030072moderately pollutedgood141excellent
020072moderately pollutedgood141excellent
010077moderately pollutedgood151excellent
000081moderately pollutedgood161excellent
230082moderately pollutedgood171excellent
220082moderately pollutedgood161excellent
210082moderately pollutedgood141excellent
200069moderately pollutedgood131excellent
190085heavily pollutedexcellent121excellent
180054lightly pollutedexcellent101excellent
170044lightly pollutedexcellent91excellent
160046lightly pollutedexcellent91excellent
150032goodexcellent81excellent
140027goodexcellent71excellent
130023goodexcellent61excellent
120020goodexcellent51excellent
110022goodexcellent51excellent
100019goodexcellent51excellent
090021goodexcellent41excellent
080022goodexcellent51excellent
070024goodexcellent51excellent
060022goodexcellent51excellent